Glass-cutting device



'I'. Dec. 14,1926.

INVENTOI? J, Barcia Patented Dec. 14, 1926.

narran stares ear JOSEPH BURDA, 0F CI-GAGO, ILLINOIS.

enasscnrrrnennvron.

Application filed November 12,1923. Serial N o.v 674,333.

. My invention relates to improvements 1n glass cutting devices, and 1tconsists in the combinations, constructions, and arrangements hereindescribed and claimed.

5 The present invention is an improvement over my prior device set forthin Patent No. 1,282,375 of Oct. 22, 1918. In said prior patent, ldisclosed a device by means of which glass could be Vconvenientlymeasured lf and cut. rlhe present invention relates to improvementsinthe means by which the glass is held, the holding means being moreeasily applied and removed from the glass.

, A further object ot my invention is to provide an improved glasscutting device,

in which the holding means is actuated by spring pressure, the springsforming part ot the means for releasing and clamping the holding devicein position. 'Y

(Ether objects and advantages will appear in the followingspecification, and the novel 'features ogt the'invention will beparticularly pointed out in the appended claims.

My invention is illustrated in thek accon'r pany drawings, forming partof this application, in which- Figure 1 is a front elevation of oneembodiment of the invention,

Figure 2 is an end view,y and Figure 3 is a detail plan view of aportion ot the device. Y

ln carrying out my invention, l provide a base 1, this being in the-form of an elon- `rati-d block, preferably made of wood. Carextendingrearwardly vfrom the front edge thereof is a metal plate 2 which isdesigned to support the plate of glass to be cut, and which acts as aprotecting member for the block 1, as well as affording a means whichwill easily permit the glass to slide therealong, without cutting intothe block.- At vthe 4rear edge ol the block is disposed a strip 3 havinga ruled surface 'for indicating one dimension ofthe plate of glass -tobecut. Vlt will be observed that the strip 3 is recessed so as to overliethe plate 2. The strip 3 may be Secured to the block 1 by s rews l?, orin anyoth'er suitable manner.

Arranged to slide along the side of the strip 3 is an abutment block orlstop member This, as will be observed from Figure 2,'

is provided with a lid-shaped plate `o, which extends above the scaleblock 3 and downried by the block on its upper sur-tace and wardly onthe rear side. An eccentric clamp 7 is provided for lclamping theabutment membert in any position along the scale. Atpthe opposite end ofthe block is disposed an upright 8, having a vertical scalel 9. Adjacenttothis scale is a vertically eX# `tending clamping and holding member10,

which in the present inst-ance is provided with a metal straight edge11- on one side or edge thereof. The vertically extending block or plate3 has secured at its Vtop a metal plate 12 in the form oa hinge butt.This -plate is slotted at 13 and is arranged` to be held in adjustedposition by means of set screwsv 14:. It is pivotally'connected at 15'by means of a link 16 with a ,spring plate 17, which is secured to thefront face oi the holding member 10 by screws 13. ril`here is a pivotalconnection at 19 between the plate 17 and the link '16.

Adjustablysecured tothe front tace of the block 1, by means .of setscrews .20,`

is a spring metal plate 21 which is pivotally connected at22 with a link23, the latter being pivotally connected at 24 to a plate 25,

which is secured to the bottom part of the holding member 10; A. handle25 is provided substantially midway between the upper and lower ends ofthe holding or clamping member 10. Y

From the foregoing description of the various parts of the device, theoperation thereof maybe readily understood. Normally the member 10 is ina position shown in dotted lines in Figure2. When now it is desired tocut a plate oi glass any given dimensions, the clamp 7 is loosened, andthe edge of the stop member 5 *facing the clamping device 10 is set atthe distance on the scale indicating the dimension of the glass to becut, this distance being measured from a line 27 on the upright 8 to theright of the straight edge 11 in Figure'l, whereV the wheel ot the glasscutter will be located as it follows the straight edge.

The abutment block is now clamped tight, and the plate ot glass isinsert-ed between the vmember 10 and the` upright, and is rprshed towardthe abutment until itis ardanger of breaking the glass. The arrangenientis such that the holding member is clamped, because it is dead-centeredwhile in holding position, for it will be observed that in order for theholding device to be mover out olf position, it will be necessary toraise it considerably. The glass cutter is now run along the straightedge, and in order to pei-init the cutter to go to the i et 'the glass,l provide the out away E28 which permits 4the wheel of the cutt"r to gobelow the edge of the `{gl-ass. 'lhe is instantly released by pullingupwardly, to swing the holding position back into its dotted lineposition. 'lhe plate may thon be moved forwardly to the edge the upright8, and the glass may be snapped by bending it along the edge in theusual manner.

it will be observed that the construction is such that the holdingineniber lO is moved toward Vand aw`- Jtroni the upright 8, whilesubstantially i, .,rallel to the upright, and that it is held liriny atthe bottoni in its closed position.

By adjusting the set screws 20 and lll, the upper r lower ends oit theholding` ineinber may be shifted to adjust the vertical position ot thestraight edge.

Et will. be noted that the strip 3 is provided with a groove 28', andthat the U- shaned n e (5 has an inwardly bent flange 2Q Vjed to slidein this groove. This prevents the displacement of the abutment block orstop member 5, so that even if the device is inverted, the block willremain in place, while it may be readily inoved along' the strip 3 atany time by releasing the handle 7, as already described.

I claiin:

l. A glass cutting' device comprising a base, an upright securedthereto, a holding` device for claii'iping the glass against theupright, said holding device being movable bodily toward and away fromthe upright, a linlr connected to the upper end of the upright, a springconnecting said link with the upper end off the holding device, aspring)v secured to said base, and a link connected with said spring andsecured to the lower end of said holding device.

2. i glass cutting device con'iprisingl a base or rectangular crosssection, an upright carried by said base, a vertically disposed holdingdevice lfor clamping the glass against the upright, said holding devicebeing` ni-k able bodily toward and away from said upright, a springsecured at one end to said base and adapted to project slightly abovethe top thei'eoiii, a linlr connected with said spring.;` at one end andwith the lower part of the holding device at the other, a linl pivotallysecured at the upper end o said upright, a spring securing said lastnamed linlr with said holding device, and a handle cai ied by saidholding device between the upper and lower ends thereof.

JOSEPH BUR D .fx

